McKown, John wrote:
-----Original Message-----
From: IBM Mainframe Discussion List
[mailto:[email protected]] On Behalf Of Steve Comstock
Sent: Tuesday, July 07, 2009 9:44 AM
To: [email protected]
Subject: Re: Question about REUS=NONE
<snip>
You need to be careful with dynamic call vs. attaching. Enterprise
COBOL programs can appear in a multitasking environment if they
are compiled with the THREAD option. Each task will have its own
copy of working-storage. COBOL programs cannot do the attach, but
they may be attached.
The COBOL manual mentions POSIX threading along with the
THREAD option. I wonder if that means that a COBOL program
could use the UNIX pthread services such as BPX1PTC to create
a new pthread (similar to ATTACH, but different) and BPX1PTJ
to wait for that thread to end (similar to WAIT on the ECB for ATTACH, but different).
<snip>
I thought about that, but I don't think it works; my
guess is that a COBOL program can't handle signal events
and there may be some other restrictions that make it
either impossible or unwieldy to drive multithreading
from a COBOL program.
Might make for some interesting testing though, although
I hope Tom Ross will chime in with his perspective and
insights.
Kind regards,
-Steve Comstock
The Trainer's Friend, Inc.
303-393-8716
http://www.trainersfriend.com
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